Patent GB-749504-A (GB)
Abstract: 749,504. Calculating-apparatus; transfer mechanism. KIENZLE APPARATE GES. Aug. 8, 1952 [Aug. 8, 1951], No. 20036/52. Class 106 (1). In a calculating machine having a travelling paper carriage, a balance totalizer, and several auxiliary totalizers, the function to be performed by the balance totalizer is determined by a cam forming part of a control mechanism differentially-positioned under the control either of a set of function control keys or of levers actuated by control projections on the carriage, and a manually-operable " reversing " mechanism is provided whereby adding and subtracting functions selected under carriage control are interchanged. The machine has a single bank of amount keys 3, Fig. 1, which co-operate with a pin carriage 6. Slides 8 are differentially positioned by engagement with the pins and held in set position by pawls 12 after which the pin carriage is cleared. Each slide positions through gears 9, a type wheel 10 on a carrier 13 which is swung to effect printing on record material carried by the platen 11. Associated with each slide 11 are actuators 16 and 23 normally engaged during the return movement of the slide by the corresponding wheels of a balance totalizer 14, 15 and a selected one, 104, 105 of a series of auxiliary totalizers mounted round the periphery of a drum 67. Transfer mechanism.-At transfer in the balance totalizer, a latch 20 is rocked to free a pawl 21 to permit the actuator 16 to make an additional step of movement, the actuator being connected to the slide 8 by a pin-and-slot and by a spring 19. A similar transfer mechanism is common to the several auxiliary totalizers. Carriage control unit. The control projections 46, Fig. 3, and column stops 118 are inserted in a frame 85 readily removable from the carriage. When the frame is removed, a bail is rocked by a spring to engage a rack secured to the carriage to prevent movement of the latter. The projections 46 effect, as described below, the following controls: selection of the function to be performed by the balance totalizer, and of the auxiliary totalizer, subtraction in the auxiliary totalizer, initiation of a machine operation, linespacing, date-printing, and non-printing of symbols. Carriage selection and control of auxiliary totalizers. A stop 46 carried by the carriage rocks a corresponding one of a set of levers 45, Fig. 2, connected by links 52, to levers 56 carrying pawls 57. A detent bail 103 latches the operated lever 56 and releases the previouslyoperated one whose pawl 57 was held in a clockwise position by a corresponding one of a set of teeth 66 spirally arranged on a drum 65 driven with the totalizer drum 67 by gearing 62 through a resilient coupling 63. A bail 53 is thus able to rock counter-clockwise and a link 54 closes a switch in the motor circuit to cause the drums 65 and 67 to be rotated counterclockwise. When the pawl 57 carried by the operated lever 56 is engaged by the associated tooth 66, the pawl 57 is rocked to restore the bail 53 and so as to switch off the driving motor. As shown, each totalizer comprises pairs of intermeshing add and subtract wheels. Normally, the addition wheels, say, of the selected totalizer are engaged by the actuators, but the subtraction wheels may be engaged instead by operation of a reversing lever 81 which rocks a lever 70 arranged to shift the drum 65 axially so that a different set of teeth 66 becomes effective. In a modification, the drum 65 is urged by a spring against a lever 70<SP>1</SP>, Fig. 14, which is engaged by a lever 82 connected by a link 69 to a lever 45<SP>1</SP> in turn coupled to a lever 88 engaging a slot in a plate 89. The latter is drawn to the right by operation of the lever 81 and by virtue of a cam slot 86, raised to rock the lever 88 and consequently shift the drum 65 axially. This result can also be achieved by a carriage stop 46 positioned to depress the lever 45<SP>1</SP>. Instead of add-subtract totalizers, the drum 67 may carry only simple add totalizers, every other one of which is selectable with the drum 65 in one axial position, the intermediate ones being selectable with the drum in its other position. Carriage and key control of balance totalizer.- The balance totalizer is mounted in a frame 26 pivoted at 124, Fig. 22, to a bail 123, and is normally held disengaged by springs. The frame is rocked clockwise for subtraction and negative total-taking by depression of a forked member 119 and counter-clockwise for addition and positive total-taking by depression of a similar member 126, Fig. 25. The members 119 and 126 are operated by studs 120, 127 in a plate fast on a shaft 121 rocked clockwise and then restored during each cycle. In totaltaking, the stud 120 co-operates with the righthand fork of the member 119 or 126 to engage the totalizer during the first half of the cycle, whereas in an entry operation, the stud 127 engages the left-hand fork of the member to engage the totalizer during the return stroke. The members 119 and 126 are positioned by levers 134, 135 respectively carrying studs 140, 141 which engage in slots in the members and rollers 136, 137 which are held by springs 138, 139 acting on the members, in contact with respective cam surfaces on a double control plate 128. In a total-taking operation, the cam surfaces allow both levers 134, 135 to move to total-taking position, but a lever 142, held in known manner in one position or another according to whether the total is positive or negative, blocks movement of the appropriate lever 134 or 135 so that only the appropriate one of the members 119, 126 is effective. The control plate 128 is carried by a link 148, Fig. 3, pivoted to a lever 145 and is urged to the left by a spring 146, but normally held by an arm 174 on the main shaft which abuts a roller 144 on the lever 145. The link 148 is coupled to a sliding stop bar 152 which co-operates with the function control keys 4 and to a rod 87 carrying a feeler 87<SP>1</SP> which co-operates with control levers 37 to 41 rockable by stops 46 correspondingly positioned on the carriage. Thus, when the lever 174 is rocked to release the lever 145, the link 148 and control plate 128 are positioned according to the function selected by the function keys 4 or by the carriage stops 46. Reverse lever.-Operation of the lever 81, Fig. 2, draws a plate 89 to the right and by virtue of a cam slot 86 therein, raises it to rock the feeler 87<SP>1</SP> about the rod 87, a tail of the feeler engaging a slot in the plate. Now if the control lever 40 is rocked by the carriage, instead of the feeler 871 engaging it to cause a subtraction operation, the feeler passes beneath it and engages a downward extension of the add lever 41. If, on the other hand, the latter is rocked by the carriage, an abutment 43, Fig. 13, thereon will be moved into the path of the rocked feeler 87<SP>1</SP> so as to condition the balance mechanism for a subtraction operation. The reverse lever also affects the auxiliary totalizers as described above. Automatic selection of positive or negative total column.-When the total-taking carriage-controlled lever 38, Fig. 16, is rocked, it rocks an arm 96 pivoted to a guide 101 for a carriage stop rod 97, the upturned end of which normally co-operates with a stop 116 on the carriage. If, however, the total is negative, the lever 142, positioned in known manner according to the sign of the total on the balance totalizer, projects a rod 100 into the path of the guide 101 so that when the arm 96 is operated the guide is rocked and the end of the rod 97 is moved from the path of the stop 116 into the path of a " negative total " stop 117. Automatic initiation of operation.-When a carriage stop 46 is in the appropriate position, a corresponding control lever 44, Fig. 17, is rocked to lift a lever 47 so that when the tabulating stop rod 97 is engaged by a column stop and the rod is shifted laterally to engage a pawl 98 carried by a slide 155 pivoted to the lever 47, a link 49, pin-and-slot connected to the lever 47, is raised to operate the initiating mechanism. Tabulating.-The carriage is normally held by the abutment of one of several column stops 118, Fig. 3, against a projection 97<SP>111</SP>, Fig. 17, of a lever 97. An extension 971 of this lever is engaged in a slot in a lever 28 carrying at its other end a roller 28<SP>1</SP> arranged over an ear 1681, Fig. 26, of a lever 168 carrying a by-pass pawl 169. During each cycle, the pawl is engaged by a roller (not shown) in an arm on the main shaft. The consequent movement of the lever 168 rocks the lever 28 so as to lower the projection 97<SP>111</SP> and release the spring-loaded carriage for tabulation. Line-spacing.-When the automatic controls are disabled as described below by operation of the lever 162, Fig. 26, line-spacing takes place at each operation. The lever 162 rocks through a link 163, a lever 167 which in turn rocks a lever 176 normally preventing rocking of a bail 178. The latter is thus able to rock and when it is restored in the latter part of a cycle, the line-spacing mechanism is operated by a lever 195 connected to the bail by a link 196. The lever 176 may also be rocked to cause linespacing by depression of a key 240 or by a carriage stop which through a control lever raises a link 247. Symbol printing.-A type-wheel 10<SP>1</SP>, Fig. 19, is positioned by a rack 208 to print a symbol corresponding with the operation carried out in the auxiliary totalizer mechanism. When the selected auxiliary totalizer is non-added by operation of a lever 220 or when the " reverse " lever 81 is operated, the stepped end of a lever 214 having an arm 216 differentially-positioned by the non-add lever 218 or by the reverse lever 79 co-operates with a stud 221 to control the rack 208. If the total key 225 or sub-total key 226 for the auxiliary totalizers is operated, a bail 233 depresses a link 235 to rock the lever 214 to an in